Blocklisting Interim Review

Invensys PLC
02 August 2007

BLOCKLISTING RETURN



Information provided on this form must be typed or printed electronically.

To:  The FSA

Date: 2 August 2007



1. Name of applicant


Invensys plc



2. Name of scheme


1998 Senior Executive Long Term Incentive Plan



3. Period of return


From      26 April 2007                              To     2 August 2007



4. Balance under scheme from previous return


590,000 Ordinary shares of nominal value 10p each



5. The amount by which the block scheme has been increased, if the scheme has
been increased since the date of the last return


n/a



6. Number of securities issued/allotted under scheme during period


145,575 Ordinary shares of nominal value 10p each



7. Balance under scheme not yet issued/allotted at end of period


444,425 Ordinary shares of nominal value 10p each



8. Number and class of securities originally listed and the date of admission


590,000 ordinary shares of 10p each, admitted on 27 April 2007



9. Total number of securities in issue at the end of the period


796,384,820 Ordinary shares of nominal value 10p each





Name of contact            Debbie Walmsley, Assistant Secretary

Address of contact         Invensys plc, Portland House, Bressenden Place, London SW1E 5BF

Telephone number of contact             020 7821 3571





Signed by .........................................

suitably experienced employee
for and on behalf of





Name of applicant: Invensys plc





If you knowingly or recklessly give false or misleading information you may be
liable to prosecution.




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